Monge Lilac
Monge Lilac
Big, Fragrant Reddish-Purple Blooms on a Classic French Lilac
Monge Lilac (Syringa vulgaris 'Monge') is a stately old French lilac prized for its large trusses of deep, rich reddish-purple flowers and powerful, classic fragrance. It grows into a tall, upright shrub that makes a magnificent spring specimen or fragrant screen. Tough, cold-hardy, and deer-resistant, it's a heritage lilac for larger gardens in Edina, Woodbury, and Maple Grove.
Monge Lilac Plant Details
| Attribute | Detail |
|---|---|
| Botanical Name | Syringa vulgaris 'Monge' |
| Mature Size | 8–10 ft. tall, 6–8 ft. wide |
| Hardiness Zone | 3–7 (Twin Cities is zone 4b–5a — fully hardy) |
| Light | Full sun (6+ hours for best bloom) |
| Bloom Time | Mid to late spring |
| Flower Color | Deep reddish-purple, intensely fragrant |
| Soil | Well-drained; tolerates clay; prefers neutral to slightly alkaline soil |
| Winter Hardiness | Reliable to -40°F — lilacs love Minnesota winters |
| Deer Resistance | Rarely browsed by deer |
Landscape Uses in Minnesota
Fragrant screens and specimens: Its tall, upright form makes a bold spring specimen or a flowering privacy screen. Space 6–8 feet apart for a screen.
Pollinator and cut-flower gardens: Butterflies love the rich blooms, which are superb cut for the vase. Pair with peonies, catmint, and salvia.
Best Time to Plant in Minnesota
Plant in spring (late April–May) or early fall (late August–mid September) in full sun with good drainage.
How to Plant Monge Lilac
Dig a hole twice the root ball width at the same depth, mixing in compost. Set the crown level, backfill, water well, and mulch 2–3 inches deep, keeping mulch off the stems. Space 6–8 feet apart.
Watering Monge Lilac
First year: Water deeply every 2–3 days at first, then weekly. Stop 2–3 weeks before the ground freezes.
After year one: Quite drought-tolerant — water during extended dry spells. Avoid soggy soil.
Q: How dark are the flowers?
Among the richest of the French lilacs — a deep reddish-purple with intense, classic fragrance.
Q: Will it survive a Minnesota winter?
Absolutely — lilacs are among the toughest cold-climate shrubs.
Q: How do I keep it blooming?
Full sun and pruning right after flowering (it blooms on old wood). Avoid late-summer pruning.
Q: Is it deer-resistant?
Yes — deer rarely browse lilacs.
You May Also Like
Charles Joly Lilac (Syringa vulgaris): A deep magenta double French lilac.
Common Purple Lilac (Syringa vulgaris): The classic fragrant heirloom lilac.
Peony (Paeonia): A fragrant spring companion.
How Many Monge Lilacs Do I Need?
For a fragrant flowering screen, space Monge Lilac 7 feet apart (it matures 6–8 feet wide):
| Screen Length | Plants Needed (7 ft spacing) |
|---|---|
| 10 feet | 2 plants |
| 20 feet | 3 plants |
| 30 feet | 5 plants |
| 40 feet | 6–7 plants |
As a specimen, give a single plant an 8–10 foot circle to show off its tall, upright form — a magnificent anchor at a corner of the yard or beside a patio where the fragrance can drift.
Monge Lilac Season-by-Season in Minnesota
- Spring: The headline act — large trusses of deep reddish-purple flowers open mid to late spring with powerful, classic lilac fragrance, drawing butterflies and filling vases indoors.
- Summer: Clean, dark green heart-shaped foliage forms a dense, tall screen after the blooms finish.
- Fall: Foliage holds late into the season with a quiet yellow-green finish; the sturdy upright frame keeps its presence in the border.
- Winter: Stout, hardy stems shrug off -40°F with flower buds already set for next spring's show — no protection needed.
At a Glance
✔ Pollinator-Friendly ✔ Deer-Resistant ✔ Drought-Tolerant
Plant It With
- Charles Joly Lilac — the deep-magenta double French lilac named in this plant's own pairing list; the two heirlooms bloom together.
- Common Purple Lilac — the classic heirloom; mix with Monge for a layered purple screen.
- Miss Kim Lilac — blooms 2–3 weeks later, stretching your lilac season into early summer.
- Wedgewood Blue Lilac — soft lilac-blue trusses that contrast beautifully with Monge's deep reddish-purple.
Is Monge Lilac Right for Your Yard?
Monge thrives in full sun (6+ hours), well-drained neutral to slightly alkaline soil, and a spot with room to reach 8–10 feet tall and 6–8 feet wide — ideal for larger Twin Cities lots that want a fragrant spring screen deer leave alone. It's not a fit if your space is small or shady: in less than 6 hours of sun bloom drops off sharply, and a compact yard is better served by a dwarf lilac like Miss Kim.